Photos: May Day around the world

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A worker wearing a construction hat with the name of Argentina's state-run oil company, YPF, shouts slogans during a labor day march in Buenos Aires, Argentina, Wednesday, May 1, 2013. Protests, parades, strikes and other demonstrations were held in cities across the planet on Wednesday. (AP Photo/Victor R. Caivano) (AP Photo/Victor R. Caivano)